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Add examples to test partial eta-expansion #2
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I think you meant to open that against http://github.com/lampepfl/dotty, not http://github.com/dotty-staging/dotty/ |
Ah, I see you wanted to merge this into an open PR, in that case I'll just give you access to the dotty-staging repo so you can push to the branch directly. |
Wow, thanks @smarter! |
Blaisorblade
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Aug 15, 2018
gsps
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Aug 30, 2018
#2 (Missed another widenSingleton in PatternMatcher)
smarter
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Feb 16, 2019
When desugaring pattern matching code for expressions where the matched value has type `Null` or `Nothing`, we used to generate code that's type-incorrect. Example: ``` val Some(x) = null ``` got desugared into ``` val x: Nothing = matchResult1[Nothing]: { case val x1: Null @unchecked = null: Null @unchecked if x1.ne(null) then { case val x: Nothing = x1.value.asInstanceOf[Nothing] return[matchResult1] x: Nothing } else () return[matchResult1] throw new MatchError(x1) } ``` There were two problems here: 1) `x1.ne(null)` 2) `x1.value` In both cases, we're trying to invoke methods that don't exist for type `Nothing` (and #2 doesn't exist for `Null`). This commits changes the desugaring so that 1) is solved by adding an ascription, if needed: (x1: AnyRef).ne(null) 2) is added by generating throw-away but type-correct code that never executes: `throw null`
tgodzik
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Mar 8, 2019
…compiler-output Extract tasty from compiler output
odersky
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Jul 17, 2019
odersky
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Jul 17, 2019
odersky
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odersky
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Jul 29, 2019
bishabosha
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Apr 28, 2023
Integrate the spec of union and intersection types.
smarter
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Aug 7, 2023
Update docs canthrow.md remove bad type alias at line 70
odersky
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Dec 18, 2023
`given ... with` or `given ... = new { ... }` kinds of definitions now follow the old rules. This allows recursive `given...with` definitions as they are found in protoQuill. We still have the old check in a later phase against directly recursive methods. Of the three loops in the original i15474 we now detect #2 and #3 with new new restrictions. #1 slips through since it is a loop involving a `given...with` instance of `Conversion`, but is caught later with the recursive method check. Previously tests #1 and #3 were detected with the recursive methods check and #2 slipped through altogether. The new rules are enough for defining simple givens with `=` without fear of looping.
odersky
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Dec 18, 2023
`given ... with` or `given ... = new { ... }` kinds of definitions now follow the old rules. This allows recursive `given...with` definitions as they are found in protoQuill. We still have the old check in a later phase against directly recursive methods. Of the three loops in the original i15474 we now detect #2 and #3 with new new restrictions. #1 slips through since it is a loop involving a `given...with` instance of `Conversion`, but is caught later with the recursive method check. Previously tests #1 and #3 were detected with the recursive methods check and #2 slipped through altogether. The new rules are enough for defining simple givens with `=` without fear of looping.
odersky
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Jan 6, 2024
`given ... with` or `given ... = new { ... }` kinds of definitions now follow the old rules. This allows recursive `given...with` definitions as they are found in protoQuill. We still have the old check in a later phase against directly recursive methods. Of the three loops in the original i15474 we now detect #2 and #3 with new new restrictions. #1 slips through since it is a loop involving a `given...with` instance of `Conversion`, but is caught later with the recursive method check. Previously tests #1 and #3 were detected with the recursive methods check and #2 slipped through altogether. The new rules are enough for defining simple givens with `=` without fear of looping.
Kordyjan
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May 23, 2024
`given ... with` or `given ... = new { ... }` kinds of definitions now follow the old rules. This allows recursive `given...with` definitions as they are found in protoQuill. We still have the old check in a later phase against directly recursive methods. Of the three loops in the original i15474 we now detect #2 and #3 with new new restrictions. #1 slips through since it is a loop involving a `given...with` instance of `Conversion`, but is caught later with the recursive method check. Previously tests #1 and #3 were detected with the recursive methods check and #2 slipped through altogether. The new rules are enough for defining simple givens with `=` without fear of looping.
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Add more tests as suggested in scala#2235.